1) Is the gram weight of the product enough?
2) Whether the material of the product is true, to prevent stealing the beam and changing the column, and selling the imitation gold pot as the golden pot
3) Whether the number of meters of the product is full of rice, this kind of short rice situation occurs from time to time
4) Whether the stereotype of the product is standard or not, in its stereotype control, it refers to the amount of glue applied to the mesh. The more glue is applied, the finalization is good, but the whole will be brittle.
5) Whether the width of the product meets the width required by the customer and so on!